When a motorist is stopped for suspicion of drunk driving one of the field sobriety tests used by law enforcement is called the horizontal gaze nystagmus test. Excluding breath or blood tests, it has been considered the most reliable way of determining intoxication. The Illinois Supreme Court, however, has handed down a decision that impacts the admissibility of such test results during trial.
The horizontal gaze nystagmus test, or HGN, calls for an officer to take a pen and place it approximately six inches from a suspected drunk driver
May 26, 2012
